body { margin: 0; font: 15px/1.4 system-ui, sans-serif; color: #1d1d1f; background: #fafafa; }
header, main, footer { padding: 12px 24px; }
h1 { margin: 0; font-size: 22px; }
.sub { margin: 2px 0 0; color: #666; }
.list { list-style: none; margin: 0; padding: 0; max-width: 960px; }
.row { display: grid; grid-template-columns: 90px 50px 1fr 200px auto; gap: 12px; align-items: center; min-height: 44px; padding: 0 12px; border-bottom: 1px solid #e5e5e5; background: #fff; }
.row .id { font-family: ui-monospace, monospace; }
.row.sev1 .sev { color: #b00020; font-weight: 600; }
.row.sev2 .sev { color: #a15c00; }
.row time { color: #555; font-variant-numeric: tabular-nums; }
footer { color: #777; font-size: 13px; }
.loader { max-width: 960px; padding: 12px; color: #666; }
.empty { max-width: 960px; padding: 12px; color: #666; }
.ack-wrap { justify-self: end; min-width: 64px; text-align: right; }
.ack { font: inherit; padding: 6px 14px; border: 1px solid #1f9e8f; background: #1f9e8f; color: #fff; border-radius: 4px; cursor: pointer; }
.ack:disabled { opacity: .6; cursor: default; }
.acked { color: #1f7a52; font-weight: 600; }
.row acked-row { }
.row.acked-row { background: #f2fbf6; }
.row:hover { background: #eef7ff; }
.row .ack:hover { background: #178a7d; }
.row .ack:active { background: #136b61; }